It could easily be the 1000000th 901. There would also be aone millionth 801, 802 as well
as 800.The 900's had the wider pins ( I think 44 but would have to look )The 800 used
the 50 pin.I wonder who determined which connector to use? What didthe original IBM
machines use? The Sugarts came with differentfront plates as well.I think the 50 pin got
determined by the use of ribbon cable.Much cheaper than hand wiring or special PC board.It
seems like the 8 inch drives had all kinds of connectors.I have a couple of other drive
connector and signal typesfrom different manufactures.They seemed to have settled down to
a standard by the5 1/5 drive time.Dwight